Basically the reason why Vietnam won because the Vietnamese wanted to win more than the Americans did. There were a couple of reasons for this. First, the Americans were an invading force, and the Vietnamese were fighting on their own soil. Second, the Americans were not willing to make an all-out commitment to win.
Go back to the old ways, restore monarchs power.
Answer: The Olmec civilization produced the earliest sophisticated art in Mesoamerica and their distinctive style provided a model for later civilizations in the region, like the Maya and the Aztec. Olmec art is most famous for colossal sculpture in volcanic stone and intricate works in jade.
Explanation: Hope this helps!